package userManagement;

/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */

import java.io.IOException;
import java.io.PrintWriter;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import db.DatabaseConnector;

/**
 *
 * @author Alawya
 */
public class ListGroups extends HttpServlet {

    /**
     * Processes requests for both HTTP <code>GET</code> and <code>POST</code> methods.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    protected void processRequest(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        response.setContentType("text/html;charset=UTF-8");
        PrintWriter out = response.getWriter();

        try {

            //make db connection
           DatabaseConnector DB = new DatabaseConnector(DatabaseConnector.getDatabaseType());
//                        DatabaseConnector DB = new DatabaseConnector("mysql");
            String[] fieldname = {"role"};
            String[][] result;

            result = DB.selectSQL("roles", fieldname);
            out.println("<html><head><title>View Groupst</title>");
		out.println("<script type=\"text/javascript\" src=\"../userManager.js\"></script>");
		out.println("</head><body>");
                out.println("<h1 align=\"center\">Users Management:</h1>");
                out.println("<h2>Groups:</h2>");
            out.println(" <table  border=\"1\" cellpadding=\"3\" >");
            out.print( "<tr><td bgcolor=\"c0c0c0\">Groups</td>");
            for (int i = 0; i < result.length; i++) {

                   out.print("<tr>");
                for (int j = 0; j < result[i].length; j++) {

                    out.println( "<td> " + result[i][j] + "</td>");
                }
            }
            out.println("</table><br/>");
            out.println("<a href=\"ListUsers\">Return to User Listing</a></body></html>");

        }  finally {
            out.close();
        }
    }

    // <editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the + sign on the left to edit the code.">
    /**
     * Handles the HTTP <code>GET</code> method.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /**
     * Handles the HTTP <code>POST</code> method.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /**
     * Returns a short description of the servlet.
     * @return a String containing servlet description
     */
    @Override
    public String getServletInfo() {
        return "Short description";
    }// </editor-fold>
}
